package chapte04;
class Animal {
    private String name;
    private int age;
    public String getName (){
        return name;
    }
    public void setName (String name) {
        this.name = name;
    }
    public int getAge () {
        return age;
    }
    public void setAge (int age){
        this.age = age;
    }
}
// 定义Dog类继承Animal 类
 class Dog extends  Animal {
    // 此处不写任何代码
}
// 定义类测试
public class gao01 {
    public static void main(String[] args) {
        Dog dog = new Dog();
        dog.setName("牧羊犬");
        dog.setAge(3);
        System.out.println("名称:"+dog.getName()+",年龄:"+dog.getAge());
    }
}